Rifle Paper Co. and Corksicle teamed up to make the cutest canteen we ever did see. 25 hours cold, 12 hours hot. Stainless Steel and BPA free. Non-slip bottom helps keep this one upright (even on our cluttered desks!). And, the most important detail, it fits ice cubes!! Everytime you use your canteen, you help the environment by reducing plastic waster in landfills and the ocean. It is also 100% recyclable - isn’t that amazing?!? One important thing to note, its not dishwasher safe - give it some handwashing love after each use and it will last many moons! Enjoy!